Canadian Medical Association Journal: “The use of Epsom salts, historically considered.”

Epsom Salt Council: "About Epsom Salt," "Soaking," "Frequently Asked Questions."

Rosemary H. Waring, PhD, DSc, School of Biosciences, University of Birmingham, England.

Taz Bhatia, MD, director, The Atlanta Center for Holistic and Integrative Medicine, Atlanta.

Why Take an Epsom Salts Bath?

Osteoarthritis and Cartilage: "OARSI Guidelines for the Non-Surgical Management of Knee Osteoarthritis."

University of Maryland Medical Center: "Fibromyalgia."

National Psoriasis Foundation: "Herbal and Natural Remedies."

Cleveland Clinic: "How to Cope with High-dose Chemo and Radiation Therapy Side Effects," "How You Can Prevent and Treat Painful Ingrown Toenails."

The Arthritis Foundation: "The Best Non-Drug Ways to Ease Knee Pain."

Mark Lebwohl, MD, chair of dermatology, Mount Sinai Hospital; chairman, National Psoriasis Foundation Medical Board.